Add token for getting the number of talks given

Add a new custom token, `[opdavies_talks:talk_count]`, that replaces the
placeholder text with the talk count value from the `TalkCounter`
service.

References #31

web/modules/custom/talks/opdavies_talks.module

@@ -8,7 +8,9 @@
 declare(strict_types=1);
 
 use Drupal\Core\Entity\EntityTypeInterface;
+use Drupal\Core\Render\BubbleableMetadata;
 use Drupal\discoverable_entity_bundle_classes\Storage\Node\NodeStorage;
+use Drupal\opdavies_talks\Service\TalkCounter;
 use Drupal\opdavies_talks\Service\TalkDateUpdater;
 
 /**
@@ -43,3 +45,41 @@ function opdavies_talks_entity_type_build(array &$entityTypes): void {
     $entityTypes['node']->setStorageClass(NodeStorage::class);
   }
 }
+
+/**
+ * Implements hook_token_info().
+ */
+function opdavies_talks_token_info(): array {
+  $info = [];
+
+  $info['types']['opdavies_talks'] = [
+    'name' => t('Oliver Davies Talks'),
+    'description' => t('Custom tokens for the Oliver Davies Talks module.'),
+  ];
+
+  $info['tokens']['opdavies_talks']['talk_count'] = 'ddd';
+
+  return $info;
+}
+
+/**
+ * Implements hook_tokens().
+ */
+function opdavies_talks_tokens(string $type, array $tokens, array $data, array $options, BubbleableMetadata $bubbleableMetadata): array {
+  $replacements = [];
+
+  if ($type == 'opdavies_talks') {
+    /** @var TalkCounter $talkCounter */
+    $talkCounter = Drupal::service(TalkCounter::class);
+
+    foreach ($tokens as $name => $original) {
+      switch ($name) {
+        case 'talk_count':
+          $replacements[$original] = $talkCounter->getCount();
+          break;
+      }
+    }
+  }
+
+  return $replacements;
+}